.md-editor{
  min-height:250px;
  .md-editor-write-panel{
    padding-top: 10px;
    .md-editor-write{
      height: 250px;
      resize: vertical;
    }
  }
  .md-editor-preview-panel{
    padding-top: 10px;
    .md-editor-preview{
      min-height:250px;
      padding:10px;
    }
  }
  .tips{
    float:right;
    margin-top:10px;
    vertical-align: middle;
    .if{
      font-size: 15px;
      vertical-align: middle;
    }
  }
}